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MENTAL MODEL · M5792

Bertrand Competition

Bertrand Competition
BusinessHigh supportIndustrial Organization
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Version 1.0.0 · Updated 2026-07-30

CORE DEFINITION

An oligopoly market model. Two firms simultaneously decide prices. If products are homogeneous, as long as one firm lowers its price, it can capture the entire market. The result is that prices quickly fall to marginal cost, leading to mutual destruction (zero profit).

SCAFFOLDING EFFECT

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Reduce cognitive load

The deadlock of price wars. If your product lacks differentiation, the Bertrand model predicts your tragic ending. Only differentiation (making products heterogeneous) can escape the Bertrand trap and gain pricing power.

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Anchor fast decisions

Oligopolists set prices simultaneously; when products are homogeneous, any price cut captures the entire market, leading to a price war that drives prices down to marginal cost, resulting in a lose-lose zero-profit outcome. Differentiation is the only way to escape the trap and gain pricing power.

MINIMUM ACTION

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Source support: Explicit

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    en.wikipedia.orghttps://en.wikipedia.org/wiki/Bertrand_competitionZH · Explicit
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